U.S. stock futures pointed lower on Monday after Iran rejected a proposed ceasefire.
The decision raised concerns about supply disruptions in the Middle East.
Oil prices climbed as traders priced in a higher risk of conflict.
Bond yields also moved higher as investors sought safer assets.
The Dow, S&P 500, and Nasdaq were all set to open in negative territory.
Energy stocks gained while technology and consumer shares lagged.
Markets remain sensitive to geopolitical headlines and fluctuating commodity prices.
Investors now await upcoming economic data for further direction.
